separate vs. collapse

separate
Column 1 Column 2 Column 3
Data 1 Data 2 Data 3
Data 1 Data 2 Data 3
Data 1 Data 2 Data 3
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collapse
Column 1 Column 2 Column 3
Data 1 Data 2 Data 3
Data 1 Data 2 Data 3
Data 1 Data 2 Data 3
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